Double-tier pet water fountain



FIG. 1 is a front perspective view of a double-tier pet fountain, showing my design.

FIG. 2 is a front elevation view thereof.

FIG. 3 is a rear elevation view thereof.

FIG. 4 is a right side elevation view thereof.

FIG. 5 is a left side elevation view thereof.

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines illustrate portions of the double-tier pet water fountain that form no part of the claimed design. The dash-dot broken lines represent the bounds of the claim and form no part of the claimed design. 

CLAIM The ornamental design for a double-tier pet water fountain, as shown and described. 